Container



R. P. PETERS Sept. l2, 1950 CONTAINER Filed Nov. 6, 1945 anni ullllnllllllllllllln .-ltlnlllllulll Illlllilln Patented Sept. 12, 1950 CONTAINER Rupert Peter Peters, Leamington Spa, England Application November I6, 1945, Serial No. 626,956 In Great Britain September 20, 1944 Section 1, Public Law 6910, August 8, 1946 Patent expires September 20, 1964 1 claim. 1

This invention relates to cylindrical containers made of papel', for the storage and transport of powdered and/or liquid materials.

Hitherto, these containers have been made with a single cylindrical wall, formed by reeling a length of paper into laminations on a mandrel, such wall having rigidly-attached end pieces forming `a complete enclosure. In practice, such containers are frequently subject to severe handling, such as dropping, and, unless the container is strongly built, damage is likely to ensue.

The object of the present invention is to provide improved constructional forms oi container which are more adapted to resist the hard wear of rail and road transport and the like, without any reduction of watertightness, whilst maintaining an economic production cost.

ccording to the invention, the improved con tainer comprises a lining which is the container proper, and a closely-iitting, unattached outer protective case comprising ya surrounding wall, and means for holding the lining captive in the case at both ends, whilst permitting slight relative movement axially. The lining may have relatively weak walls with strong ends, but will t the protective case suiliciently closely for the resistance to axial movement to provide a shockabsorbing effect. The case may be open at both ends but will lalways be a suiiiciently tight t on the liner to provide a cushion between the lining and the case. The protective case will be strong enough to withstand all normal shocks, such as when dropped endwise or on a corner, but the need to eliminate distortion of the case (which, in a one-piece container might spring the joints open) is eliminated, since the distortion stresses will not be transmitted with any violence, to the slightly-movable cushioned liner.

Preferably, the lining is made from ya single or double thickness of stout paper or like material, rolled into cylindrical form and tted with recessed end pieces made of Kraft-lined bitumen board or the like, the margins of the paper being folded over the edges of the flanges of the end pieces, and the complete liner is then slid into a strong outer cylindrical casing made of `a laminated paper strip. This cylindrical casing is tted with a handle at one end, which overlies the top of the liner to prevent its withdrawal, whilst allowing of a slight axial movement of the liner in the casing. After insertion of the liner into the base at the end furthest from the handle, a closing hoop is affixed to the casing to prevent withdrawal of the liner.

An example of the invention is illustrated in the accompanying drawing, wherein:

Fig. l is a vertical diametrical section through the container;

Fig. 2 is a plan; and

Fig. 3 is a section to a larger scale through the upper corner of the container.

Fig. 4 and Fig. 5 show modifications.

As shown in Figs. l, Zand 3, the outer container I is made in laminated form by Awinding a length of paper on to a mandrel, similarly to the container walls shown in my earlier British Specifications Nos. 466,469, 478,567, 495,500 and 568,269. Into the lower end of this casing I is tted a bead or rim 2, secured in place by Arivets 3, the bead being of strip wood, card or other suitable material, and providing a shoulder at 4 within the casing on which the liner may rest.

The liner, which is the container proper, consists of a single -or double lamination of paper, usually of the same kind as that from which the -outer case is made, with its abutting edges suitably seamed together, and into each end of the cylinder 5 thus formed is placed a ilanged disc 6 of bitumen board or the like, with the ange 6a directed outwards. These discs E form recessed end pieces and are placed suniciently far into the wall of the liner 5 to rallow the margin 'I of that wall being folded over the edge of the flange 6a, whereafter a disc 8 of paper or the like is secured'to the end piece ll5 so as to cover the joint between the flange 6a. and the said margin 'I.

The liner 5 is made a close sliding nt within the outer container I, so as to have only a thin film of air between the two, `and the lower edge of the liner rests on the said bead or rim 2. The liner 5 is slightly shorter than the container I so that, when upright, its upper. end lies below the upper edge of the outer container for a short distance, see Fig. 3. Secured to the upper part of the outer container is a metal handle 9, which projects over the open end of the casing I and forms an obstruction for withdrawal of the liner 5 as well as serving as a handle, but allows a small axial movement of the liner wit-hin the container.

Suitable filling and emptying means are provided in one end of the liner 3. In the drawing, a anged screwed orice IB is riveted to the top disc 6, under a clamping ring II, and is fitted with -a screw cap I2. If a liquid or semi-liquid is to be carried in the container, the liner 5 will be proofed after its manufacture, by the placing within it of a quantity of liquid proofing material, which will be swilled around so as to cover the 3 whole of the interior area, and in particular to fill the corners between the cylindrical Wall 5 and the ends 6. The outside of the liner will be painted with a simila1` or other liquid proong material. These external and internaly proofings will depend on the material to be packed. The outer container I may also be proofed, or may be formed from an already-proofed material.

As shown in Figs. 4 and 5, the end of the liner 5 is secured to the flange 6a of the top disc 6 by a metal hoop 5a of channel section which is swaged into position. The liner may have its margin 'l turned in over the flange of the top disc as shown in Fig. 4, or, as shown in Fig. 5, the ends of the liner and of thevflange may. be ush with each other.

In use, should the container be dropped, say on one edge, the primary shock is taken by the outer cylinder l, and any distortion of that cylinder, instead of straining the joints of the enclosed container, results merely in a relative movement between the parts I and 5. In consequence, the actual package, theparts 5 and 6, is relieved of many stresses which normally would burst'it, whilst at the same time it is adequately supported against crushing andA against collapse due to the Weight of the contents.

What I claim is:

A container for the transport and storage of powdered and liquid materials, comprising a rigid, laminated, open-ended outer case of paper, a box extending chord-wise across one end of the case to serve as a handle, a hoop secured within the other end of the case, and av liner within the case, located between the bar and hoop, capable of slight axial movement relatively to the case, but closely-tting the case, such liner having a paper wall and end discs of bitumen board with a lling orifice in one of such discs.

RUPERT PETER PETERS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS v Number Name Date 1,087,469 Stern Feb. 17, 1914 1,148,502 Cowlishaw Aug. 3, 1915 1,417,707 Wright May 30, 1922 1,590,747 Hulbertl June 29, 1926 2,200,200 Donnelly May 7, 1940 2,369,013 Braloi Feb. 6, 1945 FOREIGN PATENTS Number Country Date 503,756 Great; Britain Apr. 11, 1939 

